Eva Jansen hasn’t seen “Hamilton” yet, but she’s come closer than most. In early April, she dreamt she won tickets to the hit musical.

“I wish I’d slept longer,” said Jansen, an administrator for the Fiddlehead Theatre Company. “I love the first song.”

Since its New York debut at The Public Theater in early 2015 — on its way to Broadway — the celebrated hip-hop musical about Alexander Hamilton has worked its way into the national psyche to a degree rivaled perhaps only by Donald J. Trump.

The show, reportedly the hottest Broadway ticket in years, is sold out through the end of the year. Prices on the secondary market are reaching into the thousands per ticket.

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People who haven’t seen the show are often just as obsessed as those who have.

Children are having “Hamilton” play dates. Nonprofits — WBUR and Commonwealth Shakespeare Company
among them — are dangling “Hamilton” tickets as a fund-raising tool.

When Broadway in Boston announced its lineup for the 2016-17 season, it took the rare step of also announcing a show that is coming in 2018 — “Hamilton,” of course — the better to retain and attract subscribers.

Meanwhile, “Hamilton” groupies are behaving how you’d expect — they’re flocking to NYC Hamilton walking tours, for example — but they’re also engaging in activities you might never imagine.

In Somerville, a caterer who makes edible art creations out of gelatin created an “Alexander Gelaton” and then, through a connection, was allowed to deliver it to the cast and crew before a Sunday matinee.

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“To be there, even in my own small way, was such a rush,” said Matthew Micari, the founder of Gelology.

With the show far out of reach for most people, “Hamilton” jealousy is flaring.

Consider the scene in a local college class when one student told classmates that she saw the musical over Christmas break. “It was so great,” the young woman said. “I cried.” A second student responded with an epithet that was decidedly unsympathetic.

Prices on the secondary market for “Hamilton” are reaching into the thousands per ticket. (Aram Boghosian for The Boston Globe)

Tickets are so expensive that even those who bought seats before prices skyrocketed are having their financial choices questioned, as Amy McHugh of Braintree learned.

Over the winter, she and a friend each paid $150 for seats to an April show. But by the time their performance came around, prices for some seats had risen to $1,200 each.

“Everybody said I should sell the ticket,” McHugh said. “Even my kids. They said, ‘Mommy, you’re crazy, you could make all this money.’ ”

Besides striking it rich by selling your startup to Google or Facebook, the other way to see a show on Broadway is to win tickets in the show’s online lottery. Twenty-one front-row tickets are sold to winners for $10 apiece. In zeitgeist-centric circles, being known as a person who is playing the “Hamilton” lottery has become a credential of its own — the artsy equivalent of being seen at Fenway Park on Opening Day, or adopting a rescue dog.

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Twitter is filled with people showing they are part of the national conversation.

“Every plan to meet up in New York has a silent ‘unless I win the Hamilton lottery. You are not more important than that.’ attached to it,” tweeted @adammaid, a writer and comedian in Brooklyn.

“Kinda glad there’s no #Hamilton lottery on Sunday. It’s nice to take a break from daily rejection. (I mean, what is this? Junior High?) :-D” wrote @danslott, a comic book writer.

The “Hamilton” bug is highly contagious. People catch it from roommates and family members, and from photos showing celebrities posing with show creator and star Lin-Manuel Miranda. Kanye West, Beyonce, Julia Roberts, Daniel Radcliffe, Steve Martin, the Obamas. Molly Ringwald took a picture with Miranda’s sister.

In Brookline, all five members of the Stein/Suk family are caught in the grip of “Hamilton,” regularly incorporating favorite lines into conversation. But the children are particularly worried about their mother, Barb Stein.

“They said, ‘You have to stop talking about “Hamilton” all the time,’ ” she said. “ ‘You have to stop being the crazy “Hamilton” person.’

“I’m not that extreme,” insisted Stein, an architect, who moments later described how she and her husband surprised their kids with tickets, and then mentioned her “Hamilton” ringtone. “There are people on the Internet who are worse.”

Most people who are infatuated with “Hamilton” know they are, but for those who don’t, BuzzFeed has compiled the warning signs — “21 Steps To Becoming Obsessed With Hamilton.”

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The addiction starts with: “Being totally lost in conversations with your friends who won’t shut up about this new Broadway musical,” and concludes with: “Knowing in your heart that someday, somehow, you WILL see the show live.”

Nicole Mello, an American history major at Lesley University, doesn’t need a checklist to diagnose herself.

“Water dripping sounds like the rhythm of the music,” she wrote in an e-mail to the Globe. “I type on the keyboard and I can hear the opening of ‘Helpless’ in my head.

“I can’t sing or dance, I can barely rap,” she added, but “I performed ‘My Shot’ and ‘Cabinet Battle #1’ at open mic nights at my university.”

Mello will see the show in July, but fears exposure will makes things worse. “I am trapped in a ‘Hamilton’ purgatory from which there is no escape.”